An instrument used by vintners to determine fermentation activity by measurement of carbon dioxide produced.

An instrument used to determine fermentation efficiency by measurement of carbon dioxide is called a zymometer. A zymosocope is an apparatus used for determining the fermenting power of yeast by measuring the amount of carbonic acid produced from a quantity of sugar. You can get all sorts of zymometer products from the amazon shopping website. The wine learning center lists zymoscope as an instrument used to determine fermentation efficiency. You can win a wine-guessing game by using zymosocope and it sure sounds cool.